EXAMINATION OF NAPHTHA -FROM RANGOON PETROLEUM. 211 
Its specific gravity was found to be 0.823 at 0°. 
Heap at 187° —C, H,. Immediately above the rutylene heap there was noticed a 
well-defined tendency toward persistency at 180°-184°, and upon finally working these 
fractions by themselves, it was found to be impossible to reduce them below a certain 
size, little or nothing coming off at 180°, and there being no residue worth mentioning 
at 185°. The summit of this spurious (?) heap remained constant at 182°-184°. 
The fraction 182°-183° boiled at 187.4° (corrected). 
On analysis, 0.234 grm. of it gave 0.289 grm. of water, and 0.736 grm. of carbonic 
acid. Or, 
Found. Theory. 
Carbon, 85.77 Cy 85.7 
Hydrogen, 13.68 Hp 143 
99.45 100.0 
Its specific gravity was found to be 0.8356 at 0°. 
Margarylene = Cx, Hy Between 186° and 193° was a heap amounting to about 215 
ce. ¢. the summit of which stood out boldly,at 188°-190°. 
The fraction 189°-190°, which, by the way, was of precisely the same size of the 
188°-189°, boiled at 195.9° (corrected). 
On analysis, 0.1407 grm. of it gave 0.175 grm. water, and 0.4469 grm. carbonic acid. 
Or, r 
Found. Theory. 
Carbon, 86.64 Con 85.7 
Hydrogen, 13.79 Haz 14.8 
, 100.43 100.0 
A determination of vapor density resulted as follows :— 
Temperature of balance, . F ‘ é F : : ‘: ‘ ‘ ‘ 3 . 18,5° 
i oil-bath, F 7 : . - : . F A 5 ‘ ‘ 249° 
Excess of weight of balloon, «© - © © © 6 6 6 ee ee (0.5697 
Capacity “ . owt 2 8 = &@ &® = = = «© » 28lee, 
Air remaining in " OG: cm TE, Ao cS ER CGR pa ce a ae 0 
Height of barometer, i ‘ - i : . : : é < 3 Z 759mm. at — 20 
Density of vapor found; - - eee ee 5A78 
“ « « theoretical (C22 H22), . . . . . * * . . 5.825 
Its specific gravity was found to be 0.8398 at 0°. 
Laurylene = Cy Hy. Between 200° and 214° there were three distinct summits 
amounting respectively to about 125 ¢.¢, 150 ¢.¢, and 150¢.¢. These summits were 
well defined, particularly the lower one, the true boiling point of which was found to 
be 208.3° (corrected); the second summit boiled at 214.6° (corrected), and the third at 
219.5° (corrected). 
